Article
Materials Science, Coatings & Films
Daniel F. Fernandes, Lars Osterlund, Tomas Kubart
Summary: In this study, Reactive High Power Impulse Magnetron Sputtering (HiPIMS) was used to deposit TiO2 thin films and investigate the influence of ion parameters and deposition temperature on film crystallinity and photocatalytic performance. A long target-to-substrate distance was used to prevent unintentional substrate heating. Different pulse configurations, temperatures, and substrate bias were evaluated. Films deposited at room temperature were amorphous and required a minimum temperature of 200 degrees C for crystallization. The growth of a specific polymorph was dependent on the operation mode, with high oxygen partial pressure promoting anatase formation. HiPIMS films deposited without substrate heating showed enhanced photodegradation rates compared to the reference films deposited by pulsed dc magnetron sputtering (pdcMS). Ion assistance in HiPIMS was beneficial at moderate temperatures, improving crystallinity compared to pdcMS.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Irina Yu. Zhuravleva, Maria A. A. Surovtseva, Alina A. A. Alshevskaya, Nikolay V. V. Surovtsev, Konstantin A. A. Okotrub, Irina I. I. Kim, Dmitriy A. A. Nasimov, Natalia A. A. Bondarenko, Oleg S. S. Kuzmin, Olga V. V. Poveshchenko
Summary: This study developed an integral cytocompatibility index and a decision tree algorithm to assess the cytocompatibility of TiO2 and N-TiO2 coatings. The results showed that the sample dominated by the rutile phase exhibited the best cytocompatibility. The DTA provided more detailed information about cytocompatibility.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Quan Mao, Meng Liu, Yajie Li, Yuquan Wei, Yong Yang, Zhengren Huang
Summary: This study fabricated black TiOx films with different chemical compositions by tuning target voltage and controlling oxygen flow during reactive DC magnetron sputtering, demonstrating excellent photothermal and photocatalytic activity. The optimized TiOx films combined high light-absorptive Ti2O3 and Ti3O5 phases with photocatalytic TiO2 phase, showing remarkable optical absorbance and degradation efficiency of Rhodamine-B under UV irradiation.
Article
Engineering, Environmental
Shaoyu Yuan, Xiaolei Bao, Min Chen, Xiaoxiao Qin, Xueyan Chen, Jianghao Zhang, Changbin Zhang
Summary: In this study, it was found that TiO2 with small particle size (S-TiO2) had high toluene conversion but low CO2 mineralization, while TiO2 with large particle size (L-TiO2) had low toluene conversion but high CO2 mineralization. The higher toluene conversion on S-TiO2 was attributed to its larger specific surface area and more surface hydroxyl groups. On the other hand, the low toluene adsorption and abundant ROS production on L-TiO2 allowed for the direct ring-opening pathway and achieved higher CO2 selectivity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Lan Zhang, Jinpeng Guo, Baofei Hao, Huizhong Ma
Summary: Photocatalysis reaction has been considered as an environmentally friendly plan for solving water pollution issue and counteracting environmental degradation. In this study, WO3/TiO2 membranes were fabricated and their surface morphology, structure, and photoelectric performance were investigated. The presence of oxygen defects was found to increase the carrier density. The heterojunctions exhibited superior photocatalytic performance under light illumination.
Article
Chemistry, Physical
Nidhi Pandey, Mukul Gupta, Jochen Stahn
Summary: Nickel nitride thin film samples were deposited using reactive magnetron sputtering with varying N-2 partial flow, characterized using XRR, XRD, and XANES. The deposition rate and density of Ni-N films decreased with increasing R-N2, indicating the formation of Ni-N alloys and compounds. XRD and XANES measurements confirmed the evolution of different Ni-N compounds with Ni target surface and thin film samples. Neutron reflectivity measurements showed that Ni-N thin films became non-magnetic with increasing N incorporation. Comparisons with Fe-N and Co-N systems revealed similarities and differences in growth behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Chemistry, Physical
Hiroyuki Usui, Yasuhiro Domi, Hiroki Sakaguchi
Summary: This paper reveals the reversible Na insertion-extraction reaction of rutile TiO2 as an anode material for Na-ion batteries and improves its performance by doping with impurity elements such as Nb5+, Ta5+, and In3+. A material chemistry methodology is introduced to enhance the anode properties of rutile TiO2 electrode by impurity doping, introduction of oxygen vacancies, formation of single-crystalline particles, and reduction of aspect ratio. This knowledge is effective not only for rutile TiO2 but also for anatase TiO2 and other titanium based oxides to create advanced high-performance anode materials.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Abdulrahman S. Alotabi, Christopher T. Gibson, Gregory F. Metha, Gunther G. Andersson
Summary: The study investigated the stability of chromium oxide photodeposited onto different crystal phases of TiO2 at various temperatures, revealing that chromium oxide diffuses into the amorphous and anatase phases but remains on the surface of the rutile phase. The findings suggest differences in surface energy are responsible for these observations, with chromium oxide exhibiting higher surface energy than the amorphous and anatase phases of TiO2 but lower surface energy than the rutile phase.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Grzegorz Wisz, Paulina Sawicka-Chudy, Maciej Sibinski, Dariusz Ploch, Mariusz Bester, Marian Cholewa, Janusz Wozny, Rostyslav Yavorskyi, Lyubomyr Nykyruy, Marta Ruszala
Summary: In this study, titanium dioxide/copper oxide thin-film solar cells were prepared using the reactive direct-current magnetron sputtering technique. The influence of the deposition time of the top Cu contact layer on the structural and electrical properties of photovoltaic devices was analyzed. The structural and morphological characterization of the TiO2/CuO/Cu2O solar cells was fully studied using X-ray diffraction (XRD), scanning electron microscopy (SEM), and current-voltage (I-V) characteristics.
Article
Chemistry, Physical
Ramon Azpiroz, Enrique Carretero, Ana Cueva, Aida Gonzalez, Manuel Iglesias, Jesus J. Perez-Torrente
Summary: The magnetron sputtering technique is successfully used to prepare porous TiO2 thin films on soda-lime glasses. The morphology of the thin layers is influenced by deposition parameters, and the best angle and oxidation level achieve desired porosity and film thickness. The presence of a porous film is essential for achieving photocatalytic activity.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Ceramics
Nikola Tasic, Jovana Cirkovi, Vesna Ribic, Milan Zunic, Aleksandra Dapcevic, Goran Brankovic, Zorica Brankovi
Summary: In this study, mixed-phase TiO2 nanoparticles decorated with silver nanodots were synthesized using an environmentally-friendly wet chemical method with low molecular weight chitosan as the silver reducing agent. The addition of silver resulted in increased visible light absorption and enhanced photocatalytic activity, with optimum properties achieved at 5 wt% of silver. The structural analysis revealed that the Ag nanoparticles crystallized in a rare hexagonal modification and were implanted on the surface of anatase grains, contributing to the improved performance.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Polymer Science
Yousef Gamaan Alghamdi, Balu Krishnakumar, Maqsood Ahmad Malik, Sultan Alhayyani
Summary: A novel photocatalyst, biowaste pistachio-shell-derived activated carbon (AC)-loaded TiO2 nanocomposite (AC-TiO2), was successfully fabricated for the efficient photocatalytic degradation of toxic azo dyes and pharmaceuticals. The synthesized material exhibited enhanced photocatalytic activity and stability, making it a promising candidate for various photocatalytic applications.
Article
Materials Science, Multidisciplinary
Zhiyu Wu, Cong Zhang, Jiaqi Liu, Feng Wen, Huatang Cao, Yutao Pei
Summary: Carbon-doped Ti-O films were fabricated via reactive magnetron sputtering deposition using carbon dioxide as a reaction gas. The films were analyzed for their chemical bonding configurations and microstructure and tested for photocatalytic activities and anti-corrosion properties under different pH conditions. Results showed that the carbon-doped Ti-O films exhibited superior corrosion resistance and excellent photocatalytic activities, with higher carbon content leading to hyper-photodegradative effects under alkaline conditions for methyl orange degradation.
Article
Chemistry, Physical
R. R. Mansurov, V. S. Zverev, A. P. Safronov
Summary: In this study, a theoretical model was developed and verified by experimental studies to describe the diffusion-limited photocatalytic degradation of organic dye in aqueous solution using composite hydrogel filament with embedded photocatalyst nanoparticles. The experimental results showed that the rate of dye concentration decay can be fitted by an exponential decay function with a significant kinetic constant.
JOURNAL OF CATALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Phitsanu Poolcharuansin, Artit Chingsungnoen, Nitisak Pasaja, Mati Horprathum, James W. Bradley
Summary: The magnetic-filtering probe is used to measure the flux of negative oxygen ions in a dc reactive magnetron discharge, showing effectiveness in oxide mode of Ti-Ar/O-2 magnetron sputtering discharge. The probe can be used as a real-time diagnostic tool to monitor the sputtered O- flux and oxide state of the target surface.
Article
Nanoscience & Nanotechnology
Nathalie Lemee, Ingrid C. Infante, Cecile Hubault, Alexandre Boulle, Nils Blanc, Nathalie Boudet, Valerie Demange, Michael G. Karkut
ACS APPLIED MATERIALS & INTERFACES
(2015)
Article
Chemistry, Inorganic & Nuclear
Ary da Silva Maia, Francois Chevire, Valerie Demange, Valerie Bouquet, Mathieu Pasturel, Stephanie Deputier, Ronan Lebullenger, Marylline Guilloux-Viry, Franck Tessier
SOLID STATE SCIENCES
(2016)
Article
Chemistry, Multidisciplinary
Bruno Berini, Valerie Demange, Muriel Bouttemy, Elena Popova, Niels Keller, Yves Dumont, Arnaud Fouchet
ADVANCED MATERIALS INTERFACES
(2016)
Article
Nanoscience & Nanotechnology
A. Le Febvrier, A. C. Galca, Y. Corredores, S. Deputier, V. Bouquet, V. Demange, X. Castel, R. Sauleau, R. Lefort, L. Y. Zhang, G. Tanne, L. Pintilie, M. Guilloux-Viry
ACS APPLIED MATERIALS & INTERFACES
(2012)
Article
Chemistry, Physical
Q. Simon, V. Bouquet, V. Demange, S. Deputier, F. Wyczisk, G. Garry, A. Ziaie, M. Guilloux-Viry
APPLIED SURFACE SCIENCE
(2011)
Article
Chemistry, Physical
A. Bouyasfi, M. Mouttalie, V. Demange, B. Gautier, A. Grandfond, S. Deputier, S. Ollivier, L' H. Hamedi, M. Guilloux-Viry
APPLIED SURFACE SCIENCE
(2012)
Article
Chemistry, Physical
Q. Simon, V. Dorcet, P. Boullay, V. Demange, S. Deputier, V. Bouquet, M. Guilloux-Viry
CHEMISTRY OF MATERIALS
(2013)
Article
Chemistry, Physical
V. Demange, S. Kenzari, P. Boulet, M. C. de Weerd, J. Ledieu, J. M. Dubois, V. Fournee
JOURNAL OF ALLOYS AND COMPOUNDS
(2010)
Article
Physics, Applied
C. Hubault, C. Davoisne, A. Boulle, L. Dupont, V. Demange, A. Perrin, B. Gautier, J. Holc, M. Kosec, M. G. Karkut, N. Lemee
JOURNAL OF APPLIED PHYSICS
(2012)
Article
Chemistry, Physical
Tangi Aubert, Fabien Grasset, Stephane Mornet, Etienne Duguet, Olivier Cador, Stephane Cordier, Yann Molard, Valerie Demange, Michel Mortier, Hajime Haneda
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2010)
Article
Engineering, Chemical
G. Champion, R. Belin, H. Palancher, X. Iltis, H. Rouquette, M. Pasturel, V. Demange, P. Castany, V. Dorcet, O. Tougait
Article
Materials Science, Multidisciplinary
A. Le Febvrier, S. Deputier, V. Bouquet, V. Demange, S. Ollivier, A. C. Galca, C. Dragoi, R. Radu, L. Pintilie, M. Guilloux-Viry
Article
Materials Science, Multidisciplinary
P. Briois, D. Mercs, V. Demange, O. Banakh, F. Sanchette, A. Billard
Proceedings Paper
Materials Science, Multidisciplinary
D. Fasquelle, S. Deputier, M. Mascot, N. Uschanoff, V. Bouquet, V. Demange, M. Guilloux-Viry, J. -C. Carru
ADVANCES IN MATERIALS, PROCESSING AND MANUFACTURING
(2013)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)